Improvement in steam-generators



finden bis on] l Showinglttvo ,sides thereof.

l e bother zw'ositles..`

`C`Figure 5, asection ot Figure 6,afsection,1als

A fr? The side D `lyii1c'opposite.and parallel urith theside i .tonno.,yrooonnno, caritas-Buse, Partnern-mitin.

y Letters Paten Nufnznoz, dated naar 7. 1871.v

" Annrnovl:uil-:Nr IN sTEAlvi-exaltanAToRs.v

" .The `Btlheilnle'referred to in these Letters Patent and :making part of the same.

ne animata tr come o. Woonmsn, @frats- 41 Allegheny and State `of 4Penn- Lproyements Steam-Gel rators; andl do hereby` declare :that thejfollow' afull,'clear, and 'exact de- .scription thereof, referenceybeinghadto the accompa- `:tying drawing landto thefletteis of reference marked f thereon whichllform apart of this specication.

1 fllhe.naturefofjrny` invention. relates to that classer" steam-generators :usuallyrknown as waterftubeboilersgand eonsistsin theconstruction otz suchboilers,

dispensing altogether ivith the use of brick-Work, form- C "Iingla'quadrangular boiler `iimvhich therel is' no dead "surface, "all the-aireaexposed `1:0 the actionof thetire beingheating surface,anda1so steam-generatng surface, saidboiler beingalsojee to expand transversely f myinyenmon, I will describe the construction thereof:

` In the accompanying drawing- .'Figure. l is ai perspeoti 'Viewoi'` my invention,-

ctive eW-lof thesame, showing `and'pcarries the sides ofthe boiler, and also serves asa `@frame or bearer forl theordinarygratebars, forming an `"ordinaryfurnace;` i 1 i Projecting upward from" the corners of the-said'frame "A arefanglespieces A1,"of suitable construction, being i tied and heldrigid together at various places by means i fof ordinary tie-rods, 1A?. `1

l l Between each of saidlanglelpieces Ais aseries of i cellular nietal boxes, B, of any suitable shape, forming lfibursidesU `D 'E F. As shown in iig. 1,1on the side :2 O, the boxes fare placed horizontally, and are oi' a quadsl lreveillereinteilen.@shtml part C', being Hanover thanftleir ends in such a manner that two ofthe said boxes,.being placed one above the othenthere will be suioientroom between them for a passage of a brush,

y .f wherebyftbe furnace maybe cleaned. `These said y opeuingsmay be fitted with an ordinary door or stopper, to preyentthe egress' of smoke. f 'luihelwerboxes,`0rz, ofizrthe side C ,are so arrangeds f and of such a shapeaswill "make an openingv suitable `1 i'orthe ordinary` iredoori AO, 'consists also of cellular boxes, as :shown in the drawing.

The boxes D lie vertically and extend from the baseframe A to the crown of the boiler. These boxes D' are connected to the boxes C of the. side C by'means of `ordinary tubes, S, passing at right angles therefrom, an orilcebeing in each box corresponding to theopen-v ings in the tubesS, orthereabout.

The said tubes are jointedto the saidboxes inany ordinary manner,'and are held thereto by means of bolts S1 passing through the side D, a'nd tubes S, and side O, and `firmly tying the whole together bymeans of ariordiuary screwed nut, S?. The several boxes forming the said sides -can ybe relatively connected top gether, if required, in any suitable manner, as seen in dig. 5

The lower box E1 has an orice in its upper part. rEhe box E2 has a corresponding oriiice'.

Efncrcling these orifices each box has a groovefE,

in4 which lies an ordinary packing-ring, Et

Between these packing-rings is a metallic ring, E5.

A" bolt, 4Ehaving a head which entends across the orih'ce in the box E2, passes through both boxes, and, beingA tightened by means of an ordinary screwednut, holds 'both boxes together, forming thereby a tight 'oint.

As seen in iig. c6, thebox El, has a projection, F2, provided with screw-threads on its periphery, which screws into an orifice in' the box: F3, having female screw-threads therein, holding both'boxes tight and making a perfect/joint.

The sides E F are composed of cellular boxes, El F1, of similar construction as thosecomposing the'sides C D, and arel connected together` by'means ofvordinary E F, having corresponding orifices therein, and are i connected and tied thereto by means of the bolts T',

similar in construction and attached the same as the boltslSl. The sides .C D E F thusform' the Walls of the furnace, each side being heating surface and each side being a steamgenerator.

, The crown H of the furnaceconsists, also, of a series of cellular metal boxes "of any suitable shape, as shown .in the drawing.

sothat-all the steam l arising from the wallsE and-F...

passes therein and througlithe Whole section and escapes at the outlet J.

A connection is' also made from the side O, at K,

9 ififr.

so that all the steam generated in the walls C and D also passes therein, passes through the whole-range of boxes H, and also escapes at J. v

1t may be seen that the four sides C D E F form two complete and separate boilers, save in the connection with the crown H, viz., the .ides O and D being Connected together by means of tlie tubes S, the water circulates from the side O to the side D,and inversely v form one generator, or a double vgenerator combined in one. The sides E and F being connected together likewise, form a separate generator, while thefonr combined sides, connected tothe crown H, form one` boiler', the crown H forming a receiver or steam-drum,

, and, as it is acted upon by the furnace heat,it becomes a superheater.

The sides C and D being thus connected, may e'xpand laterally or longitudinally, and the -sidesll and F in like manner, while the angle-pieces AKforni a joint at the side, preventing She egress of smoke ory heat.

Each section canbe supplied with the ordinary boilerfm'oinltings, and each box can be supplied with au ordinary mud-orince, whereby they may be cleaned from' sediment.

l am aware that cellular-boxed water-tube vboilers have been heretofore constructed, but only two of the sides thereof areheatiug or steamrenel-ating surfaces.

In some instances the other` two sides (if the boiler is quadrangular) are composed of brick-work, or' else the "whole is surrounded with brick-work, V.causing thus work.

By the construction of boilers according to my 4herein-described invention, the whole of the sides are heating surfaces and also steam-generators, consequently no heat is lost, since the whole action of the l iiame is. on the sides, consequently not requiring as much fuel to generate steam as ordinarily; and smce the circulation of water from Aside to side would be perfect, steam would be generated very rapidly. Thus smaller boilers and lower pressure may bc used than ordinarily; and since, also, boilers constructed as ilescribed do not require any brick-work, they can be erected very speedily and not requiring skilled labor `to build the same; and as they can be readily cleaned,

`less danger of explosion will ensue and; vas they are easy of access, can be easily and readily repaired.

My invention is readily applicable to the construction of locomotive, portable, 4and marine-boilers, es pecially to the latter, since lightness and smallness of bulk is there required. Boilers constructed as described, having full heating surface, would generate steam more rapidly than the ordinary boilers much vlarger in bulk, thus saving room.

I do 4not limit myself to the precise form of boxes shown, nor to their precise arrangement relative to each other; but

Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

1. A quadrangular steam-generator, constructedof sectional boxes, forming the walls of the furnace, and having its opposite sides connected by tubes, substantially as described.

`2. In combination with the above, afurnace-crown, consisting of a series of cellular metallic boxes so varranged and connected that the steam arising from the fumace cellular walls'willpass through the same, the said crown being fully in contact with the heat from the furnace, substantially as and for the purpose described.

3. In combination with the above, a furnace-crown, composed wholly or partly of cellular plates or cellular boxes, so relatively arranged with the furnace-walls that the steam arising therefrom will pass into said crown, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

JOHN O. WOODHEAD.

Witnesses:

PERCEVAL Baexem, GEORGE MILLER. 

